Fireworks Regulate Adult has a concept that refers to the development of sexual depictions inspired by the popular Nihon playing cards called Hanabi. Despite the innocent nature of the original game, some people have adopted it in a adult-themed way, exploring erotic and sexily charged interpretations. This fusion of traditional Japanese pastime with naughty content under the label "Hanabi Rule 34" has gained significant fanbase amidst certain subcultures. These unique artworks often highlight aesthetically captivating portrayals of the figurines from the set of cards. It blends the naivety of Hanabi with the seductiveness of Rule 34, creating a contradictory juxtaposition that grabs the attention alongside curiosity of many admirers.